#1
I bought some today hoping they would work. They have 700mb each and I was strangely able to put about 50 - 60 songs. (I usually can put 20)

I burned the songs using WMP, was done, went to the car to see if they work, and it didn't.

now what
#3
^
Yeah, I thought I was, but I burned the songs the exact way I did when I used those crappy maxell cd's. and those worked with my stereo.
#4
you should have bought microsoft brand, sony sucks
im joking of course sony rules
and you probally did input data and not music, so try again